usb_control_msg() must use a dma-capable buffer.
This fixes the following error reported by smatch:
drivers/watchdog/pcwd_usb.c:257 usb_pcwd_send_command() error: doing dma on the
stack (buf)
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Driver core clears the driver data to NULL after device_release
or on probe failure, so just remove it from here.
Driver core change:
"device-core: Ensure drvdata = NULL when no driver is bound"
(sha1: 0998d06310)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
On CSR SiRFprimaII and SiRFatlasVI, the 6th timer can act as a watchdog
timer when the Watchdog mode is enabled.
watchdog occur when TIMER watchdog counter matches the value software
pre-set, when this event occurs, the effect is the same as the system
software reset.
Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: Romain Izard <romain.izard.pro@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
of_match_ptr() is a macro used to avoid undefined reference error if
CONFIG_OF is used to selectively compile in or out the
data structure. It is defined as follows:
#ifdef CONFIG_OF
#define of_match_ptr(ptr) ptr
#else
#define of_match_ptr(ptr) NULL
#endif
In the case of this series, none of the drivers use CONFIG_OF macro to
compile out the data structure (i.e., the data structure is always
defined).
Hence the use of of_match_ptr() does not make any sense. Thus removing
it to make the code look simpler for readability.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
There seems to be some confusion here which functions return positive
numbers and which return negative error codes.
copy_to_user() returns the number of bytes remaining to be copied but we
want to return -EFAULT.
The rest is just clean up. get_user() actually returns zero on success
and -EFAULT on error so we can preserve the error code. The
timeout_to_regval() function returns -EINVAL on failure, but we can
propogate that back instead of hardcoding -EINVAL ourselves.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
--
I accidently put the devicetree bindings for the MEN A21 watchdog driver in
Documentation/devicetree/bindings/gpio instead of
Documentation/devicetree/bindings/watchdog, this patch addresses this error.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Rob Landley <rob@landley.net>
This patch adds a watchdog driver for the main hardware watchdog timer
found on MOXA ART SoCs.
The MOXA ART SoC provides one writable timer register, restarting
the hardware once it reaches zero. The register is auto decremented
every APB clock cycle.
Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Added __user annotation to fix the following sparse warnings.
Also, it makes 'kempld_prescaler' static because it is used
only in this file.
drivers/watchdog/kempld_wdt.c:70:11: warning: symbol 'kempld_prescaler' was not declared. Should it be static?
drivers/watchdog/kempld_wdt.c:364:23: warning: incorrect type in initializer (different address spaces)
drivers/watchdog/kempld_wdt.c:364:23: expected int const [noderef] <asn:1>*register __p
drivers/watchdog/kempld_wdt.c:364:23: got int *<noident>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Enable auto loading by udev when imx2_wdt is compiled as a module.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This is necessary to make the driver work with platforms using the
common clock framework.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
The dw_wdt only provides PM_SLEEP operations, so convert the driver
to use SIMPLE_DEV_PM_OPS instead of populating the struct manually.
This has the added effect of simplifying the CONFIG_PM ifdefs.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Using the i2c-eg20t driver and call i2cdetect or probe on the bus,
the driver will print a lot of error messages if there was no ACK
received.
i2cdetect normally print a table with all the available devices. If there
is no device on the address, the table will be empty.
Currently with the i2c-eg20t driver, the table is not visible because
the error messages destroy the table.
Error message: pch_i2c_getack return -71
This patch prevent the driver to print the messages to syslog.
The pch_i2c_wait_for_check_xfer function is the only one who is
calling pch_i2c_getack, so we can delete the function and add the
read to pch_i2c_wait_for_check_xfer.
If no ACK is received, the Message will be printed as a dbg
message.
Fixed print message to be a one liner so we can grep for the
error message.
Tested on Intel Atom E6xx and Eg20t Chipset.
Signed-off-by: Andreas Werner <wernerandy@gmx.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit reverts commit 7afbddfae9 ("IB/core: Temporarily disable
create_flow/destroy_flow uverbs"). Since the uverbs extensions
functionality was experimental for v3.12, this patch re-enables the
support for them and flow-steering for v3.13.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Commit 400dbc9658 ("IB/core: Infrastructure for extensible uverbs
commands") added an infrastructure for extensible uverbs commands
while later commit 436f2ad05a ("IB/core: Export ib_create/destroy_flow
through uverbs") exported ib_create_flow()/ib_destroy_flow() functions
using this new infrastructure.
According to the commit 400dbc9658, the purpose of this
infrastructure is to support passing around provider (eg. hardware)
specific buffers when userspace issue commands to the kernel, so that
it would be possible to extend uverbs (eg. core) buffers independently
from the provider buffers.
But the new kernel command function prototypes were not modified to
take advantage of this extension. This issue was exposed by Roland
Dreier in a previous review[1].
So the following patch is an attempt to a revised extensible command
infrastructure.
This improved extensible command infrastructure distinguish between
core (eg. legacy)'s command/response buffers from provider
(eg. hardware)'s command/response buffers: each extended command
implementing function is given a struct ib_udata to hold core
(eg. uverbs) input and output buffers, and another struct ib_udata to
hold the hw (eg. provider) input and output buffers.
Having those buffers identified separately make it easier to increase
one buffer to support extension without having to add some code to
guess the exact size of each command/response parts: This should make
the extended functions more reliable.
Additionally, instead of relying on command identifier being greater
than IB_USER_VERBS_CMD_THRESHOLD, the proposed infrastructure rely on
unused bits in command field: on the 32 bits provided by command
field, only 6 bits are really needed to encode the identifier of
commands currently supported by the kernel. (Even using only 6 bits
leaves room for about 23 new commands).
So this patch makes use of some high order bits in command field to
store flags, leaving enough room for more command identifiers than one
will ever need (eg. 256).
The new flags are used to specify if the command should be processed
as an extended one or a legacy one. While designing the new command
format, care was taken to make usage of flags itself extensible.
Using high order bits of the commands field ensure that newer
libibverbs on older kernel will properly fail when trying to call
extended commands. On the other hand, older libibverbs on newer kernel
will never be able to issue calls to extended commands.
The extended command header includes the optional response pointer so
that output buffer length and output buffer pointer are located
together in the command, allowing proper parameters checking. This
should make implementing functions easier and safer.
Additionally the extended header ensure 64bits alignment, while making
all sizes multiple of 8 bytes, extending the maximum buffer size:
legacy extended
Maximum command buffer: 256KBytes 1024KBytes (512KBytes + 512KBytes)
Maximum response buffer: 256KBytes 1024KBytes (512KBytes + 512KBytes)
For the purpose of doing proper buffer size accounting, the headers
size are no more taken in account in "in_words".
One of the odds of the current extensible infrastructure, reading
twice the "legacy" command header, is fixed by removing the "legacy"
command header from the extended command header: they are processed as
two different parts of the command: memory is read once and
information are not duplicated: it's making clear that's an extended
command scheme and not a different command scheme.
The proposed scheme will format input (command) and output (response)
buffers this way:
- command:
legacy header +
extended header +
command data (core + hw):
+----------------------------------------+
| flags | 00 00 | command |
| in_words | out_words |
+----------------------------------------+
| response |
| response |
| provider_in_words | provider_out_words |
| padding |
+----------------------------------------+
| |
. <uverbs input> .
. (in_words * 8) .
| |
+----------------------------------------+
| |
. <provider input> .
. (provider_in_words * 8) .
| |
+----------------------------------------+
- response, if present:
+----------------------------------------+
| |
. <uverbs output space> .
. (out_words * 8) .
| |
+----------------------------------------+
| |
. <provider output space> .
. (provider_out_words * 8) .
| |
+----------------------------------------+
The overall design is to ensure that the extensible infrastructure is
itself extensible while begin more reliable with more input and bound
checking.
Note:
The unused field in the extended header would be perfect candidate to
hold the command "comp_mask" (eg. bit field used to handle
compatibility). This was suggested by Roland Dreier in a previous
review[2]. But "comp_mask" field is likely to be present in the uverb
input and/or provider input, likewise for the response, as noted by
Matan Barak[3], so it doesn't make sense to put "comp_mask" in the
header.
[1]:
http://marc.info/?i=CAL1RGDWxmM17W2o_era24A-TTDeKyoL6u3NRu_=t_dhV_ZA9MA@mail.gmail.com
[2]:
http://marc.info/?i=CAL1RGDXJtrc849M6_XNZT5xO1+ybKtLWGq6yg6LhoSsKpsmkYA@mail.gmail.com
[3]:
http://marc.info/?i=525C1149.6000701@mellanox.com
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Link: http://marc.info/?i=cover.1383773832.git.ydroneaud@opteya.com
[ Convert "ret ? ret : 0" to the equivalent "ret". - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
The structure holding any types of flow_spec is of no use to
userspace. It would be wrong for userspace to do:
struct ib_uverbs_flow_spec flow_spec;
flow_spec.type = IB_FLOW_SPEC_TCP;
flow_spec.size = sizeof(flow_spec);
Instead, userspace should use the dedicated flow_spec structure for
- Ethernet : struct ib_uverbs_flow_spec_eth,
- IPv4 : struct ib_uverbs_flow_spec_ipv4,
- TCP/UDP : struct ib_uverbs_flow_spec_tcp_udp.
In other words, struct ib_uverbs_flow_spec is a "virtual" data
structure that can only be use by the kernel as an alias to the other.
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Link: http://marc.info/?i=cover.1383773832.git.ydroneaud@opteya.com
Signed-off-by: Roland Dreier <roland@purestorage.com>
A common header will allows better checking of flow specs size, while
ensuring strict alignment to 64 bits.
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Link: http://marc.info/?i=cover.1383773832.git.ydroneaud@opteya.com
Signed-off-by: Roland Dreier <roland@purestorage.com>
This patch adds "flow" prefix to most of data structure added as part
of commit 436f2ad05a ("IB/core: Export ib_create/destroy_flow through
uverbs") to keep those names in sync with the data structures added in
commit 319a441d13 ("IB/core: Add receive flow steering support").
It's just a matter of translating 'ib_flow' to 'ib_uverbs_flow'.
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Link: http://marc.info/?i=cover.1383773832.git.ydroneaud@opteya.com
Signed-off-by: Roland Dreier <roland@purestorage.com>
Commit 436f2ad05a ("IB/core: Export ib_create/destroy_flow through
uverbs") added public data structures to support receive flow
steering. The new structs are not following the 'uverbs' pattern:
they're lacking the common prefix 'ib_uverbs'.
This patch replaces ib_kern prefix by ib_uverbs.
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Link: http://marc.info/?i=cover.1383773832.git.ydroneaud@opteya.com
Signed-off-by: Roland Dreier <roland@purestorage.com>
This patch fixes the following issues:
1. Unneeded checks were removed
2. Removed the fixed size out of flow_attr.size, thus simplifying the checks.
3. Remove a 32bit hole on 64bit systems with strict alignment in
struct ib_kern_flow_att by adding a reserved field.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
_end is used, but it's already provided by <asm/sections.h>, so use that.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: Richard Weinberger <richard@nod.at>
This removes the STDIO_CONSOLE Kconfig parameter which
is defined but no longer used anywhere in the makefiles and source code.
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
arch/um/defconfig only lists one default configuration, and that applies
only to the i386 architecture. Replace it with two minimal
configuration files generated using `make savedefconfig`:
i386_defconfig and x86_64_defconfig
The build scripts now require two updates:
1. um's Kconfig (arch/x86/um/Kconfig) should specify an ARCH_DEFCONFIG
section explicitly pointing to these scripts if the required
variables are set. Take care to remove the DEFCONFIG_LIST section
defined in the included file arch/um/Kconfig.common.
2. um's Makefile (arch/um/Makefile) should set KBUILD_DEFCONFIG properly
for the top-level Makefile to pick up. Copy the logic in
arch/x86/Makefile to properly pick the defconfig file depending on
the actual architecture; except we're working with $SUBARCH here,
instead of $ARCH.
Now, you can do:
$ ARCH=um make defconfig
$ ARCH=um make
and successfully build User-Mode Linux on an x86_64 box in default
configuration.
Cc: Richard Weinberger <richard@nod.at>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
As UML uses an alternative signal stack we cannot use
the current stack pointer for stack dumping if UML itself
dies by SIGSEGV. To bypass this issue we save regs taken
from mcontext in our segv handler into thread_struct and
use these regs to obtain the stack pointer in show_stack().
Signed-off-by: Richard Weinberger <richard@nod.at>
Currently on UML stack traces are not very reliable and both
x86 and x86_64 have their on implementations.
This patch unifies both and adds support to outline unreliable
functions calls.
Signed-off-by: Richard Weinberger <richard@nod.at>
Pull CIFS fixes from Steve French:
"A set of cifs fixes most important of which is Pavel's fix for some
problems with handling Windows reparse points and also the security
fix for setfacl over a cifs mount to Samba removing part of the ACL.
Both of these fixes are for stable as well.
Also added most of copychunk (copy offload) support to cifs although I
expect a final patch in that series (to fix handling of larger files)
in a few days (had to hold off on that in order to incorporate some
additional code review feedback).
Also added support for O_DIRECT on forcedirectio mounts (needed in
order to run some of the server benchmarks over cifs and smb2/smb3
mounts)"
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
[CIFS] Warn if SMB3 encryption required by server
setfacl removes part of ACL when setting POSIX ACLs to Samba
[CIFS] Set copychunk defaults
CIFS: SMB2/SMB3 Copy offload support (refcopy) phase 1
cifs: Use data structures to compute NTLMv2 response offsets
[CIFS] O_DIRECT opens should work on directio mounts
cifs: don't spam the logs on unexpected lookup errors
cifs: change ERRnomem error mapping from ENOMEM to EREMOTEIO
CIFS: Fix symbolic links usage
- Stable fix for data corruption when retransmitting O_DIRECT writes
- Stable fix for a deep recursion/stack overflow bug in rpc_release_client
- Stable fix for infinite looping when mounting a NFSv4.x volume
- Fix a typo in the nfs mount option parser
- Allow pNFS layouts to be compiled into the kernel when NFSv4.1 is
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Merge tag 'nfs-for-3.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes:
- Stable fix for data corruption when retransmitting O_DIRECT writes
- Stable fix for a deep recursion/stack overflow bug in rpc_release_client
- Stable fix for infinite looping when mounting a NFSv4.x volume
- Fix a typo in the nfs mount option parser
- Allow pNFS layouts to be compiled into the kernel when NFSv4.1 is
* tag 'nfs-for-3.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: fix pnfs Kconfig defaults
NFS: correctly report misuse of "migration" mount option.
nfs: don't retry detect_trunking with RPC_AUTH_UNIX more than once
SUNRPC: Avoid deep recursion in rpc_release_client
SUNRPC: Fix a data corruption issue when retransmitting RPC calls
Two peaks in diffstat are for the audio EQ init of IDT codecs and the
EMU2004 usb mixer addition, both of which are pretty device-specific,
so safe to apply. The rest are a bunch of small fixes, most of them
are regression fixes.
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Merge tag 'sound-fix-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Two peaks in diffstat are for the audio EQ init of IDT codecs and the
EMU2004 usb mixer addition, both of which are pretty device-specific,
so safe to apply. The rest are a bunch of small fixes, most of them
are regression fixes"
* tag 'sound-fix-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits)
ALSA: hda - load EQ params into IDT codec on HP bNB13 systems
ASoC: cs42l52: Correct MIC CTL mask
ASoC: wm8962: Turn on regcache_cache_only before disabling regulator
ALSA: jack: Unregister input device at disconnection
ALSA: pcsp: Fix the order of input device unregistration
ASoC: fsl: imx-pcm-fiq: omit fiq counter to avoid harm in unbalanced situations
ASoC: blackfin: Fix missing break
ALSA: usb-audio: add front jack channel selector for EMU0204
ALSA: hda - Don't clear the power state at snd_hda_codec_reset()
ASoC: arizona: Fix typo in name of EQ coefficient controls
ALSA: hda - Control EAPD for Master volume on Lenovo N100
ALSA: hda - Don't turn off EAPD for headphone on Lenovo N100
ALSA: isa: not allocating enough space
ALSA: snd-aoa: two copy and paste bugs
ASoC: wm8997: Correct typo in ISRC mux routes
ALSA: hda - Check keep_eapd_on before inv_eapd
ALSA: hda - Fix Line Out automute on Realtek multifunction jacks
ALSA: msnd: Avoid duplicated driver name
ALSA: compress_core: don't return -EBADFD from poll if paused
ALSA: hda - hdmi: Fix wrong baseline length in ATI/AMD generated ELD
...
A first set of batches of fixes for 3.13. The diffstat is large mostly
because we're adding a defconfig for a family that's been lacking it, and
there's some missing clock information added for i.MX and OMAP.
The at91 new code is around dealing with RTC/RTT reset at boot to fix possible
hangs due to pending wakeup interrupts coming in during early boot.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A first set of batches of fixes for 3.13. The diffstat is large
mostly because we're adding a defconfig for a family that's been
lacking it, and there's some missing clock information added for i.MX
and OMAP.
The at91 new code is around dealing with RTC/RTT reset at boot to fix
possible hangs due to pending wakeup interrupts coming in during early
boot"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (29 commits)
ARM: OMAP2+: Fix build for dra7xx without omap4 and 5
ARM: OMAP2+: omap_device: maintain sane runtime pm status around suspend/resume
doc: devicetree: Add bindings documentation for omap-des driver
ARM: dts: doc: Document missing compatible property for omap-sham driver
ARM: OMAP3: Beagle: fix return value check in beagle_opp_init()
ARM: at91: fix hanged boot due to early rtt-interrupt
ARM: at91: fix hanged boot due to early rtc-interrupt
video: exynos_mipi_dsim: Remove unused variable
ARM: highbank: only select errata 764369 if SMP
ARM: sti: only select errata 764369 if SMP
ARM: tegra: init fuse before setting reset handler
ARM: vt8500: add defconfig for v6/v7 chips
ARM: integrator_cp: Set LCD{0,1} enable lines when turning on CLCD
ARM: OMAP: devicetree: fix SPI node compatible property syntax items
pinctrl: single: call pcs_soc->rearm() whenever IRQ mask is changed
ARM: OMAP2+: smsc911x: fix return value check in gpmc_smsc911x_init()
MAINTAINERS: drop discontinued mailing list
ARM: dts: i.MX51: Fix OTG PHY clock
ARM: imx: set up pllv3 POWER and BYPASS sequentially
ARM: imx: pllv3 needs relock in .set_rate() call
...
Pull perf fixes from Ingo Molnar:
"Tooling changes only: it includes the ARM tooling fixlets, various
other fixes, smaller updates, minor cleanups"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf record: Add an option to force per-cpu mmaps
perf probe: Add '--demangle'/'--no-demangle'
perf ui browser: Fix segfault caused by off by one handling END key
perf symbols: Limit max callchain using max_stack on DWARF unwinding too
perf evsel: Introduce perf_evsel__prev() method
perf tools: Use perf_evlist__{first,last}, perf_evsel__next
perf tools: Synthesize anon MMAP records again
perf top: Add missing newline if the 'uid' is invalid
perf tools: Remove trivial extra semincolon
perf trace: Tweak summary output
tools/perf/build: Fix feature-libunwind-debug-frame handling
tools/perf/build: Fix timerfd feature check
The only real feature that was added this release is from Namhyung Kim,
who introduced "set_graph_notrace" filter that lets you run the function
graph tracer and not trace particular functions and their call chain.
Tom Zanussi added some updates to the ftrace multibuffer tracing that
made it more consistent with the top level tracing.
One of the fixes for perf function tracing required an API change in
RCU; the addition of "rcu_is_watching()". As Paul McKenney is pushing
that change in this release too, he gave me a branch that included
all the changes to get that working, and I pulled that into my tree
in order to complete the perf function tracing fix.
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Merge tag 'trace-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing update from Steven Rostedt:
"This batch of changes is mostly clean ups and small bug fixes. The
only real feature that was added this release is from Namhyung Kim,
who introduced "set_graph_notrace" filter that lets you run the
function graph tracer and not trace particular functions and their
call chain.
Tom Zanussi added some updates to the ftrace multibuffer tracing that
made it more consistent with the top level tracing.
One of the fixes for perf function tracing required an API change in
RCU; the addition of "rcu_is_watching()". As Paul McKenney is pushing
that change in this release too, he gave me a branch that included all
the changes to get that working, and I pulled that into my tree in
order to complete the perf function tracing fix"
* tag 'trace-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Add rcu annotation for syscall trace descriptors
tracing: Do not use signed enums with unsigned long long in fgragh output
tracing: Remove unused function ftrace_off_permanent()
tracing: Do not assign filp->private_data to freed memory
tracing: Add helper function tracing_is_disabled()
tracing: Open tracer when ftrace_dump_on_oops is used
tracing: Add support for SOFT_DISABLE to syscall events
tracing: Make register/unregister_ftrace_command __init
tracing: Update event filters for multibuffer
recordmcount.pl: Add support for __fentry__
ftrace: Have control op function callback only trace when RCU is watching
rcu: Do not trace rcu_is_watching() functions
ftrace/x86: skip over the breakpoint for ftrace caller
trace/trace_stat: use rbtree postorder iteration helper instead of opencoding
ftrace: Add set_graph_notrace filter
ftrace: Narrow down the protected area of graph_lock
ftrace: Introduce struct ftrace_graph_data
ftrace: Get rid of ftrace_graph_filter_enabled
tracing: Fix potential out-of-bounds in trace_get_user()
tracing: Show more exact help information about snapshot
Mostly bug fixes and clean up. There is a new driver, which is actually
moving a custom PWM driver from drivers/misc.
The majority of the patches are enhancements to the device tree support
in the pwm-backlight driver. Backlights can now additionally be powered
using a regulator and enabled using a GPIO in addition to just the PWM
input.
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Merge tag 'pwm/for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"Mostly bug fixes and clean up. There is a new driver, which is
actually moving a custom PWM driver from drivers/misc.
The majority of the patches are enhancements to the device tree
support in the pwm-backlight driver. Backlights can now additionally
be powered using a regulator and enabled using a GPIO in addition to
just the PWM input"
* tag 'pwm/for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (30 commits)
Documentation/pwm: Update supported SoC name for pwm-samsung
pwm: samsung: Fix kernel warning while unexporting a channel
MAINTAINERS: Move PWM subsystem tree to kernel.org
Documentation/pwm: Fix trivial typos
pwm-backlight: Remove unused variable
pwm_backlight: avoid short blank screen while doing hibernation
pwm-backlight: Fix brightness adjustment
pwm: add ep93xx PWM support
pwm-backlight: Allow for non-increasing brightness levels
pwm-backlight: Add power supply support
pwm-backlight: Use new enable_gpio field
unicore32: Initialize PWM backlight enable_gpio field
ARM: shmobile: Initialize PWM backlight enable_gpio field
ARM: SAMSUNG: Initialize PWM backlight enable_gpio field
ARM: pxa: Initialize PWM backlight enable_gpio field
ARM: OMAP: Initialize PWM backlight enable_gpio field
pwm-backlight: Add optional enable GPIO
pwm-backlight: Track enable state
pwm-backlight: Refactor backlight power on/off
pwm-backlight: Improve readability
...
Pull nfsd changes from Bruce Fields:
"This includes miscellaneous bugfixes and cleanup and a performance fix
for write-heavy NFSv4 workloads.
(The most significant nfsd-relevant change this time is actually in
the delegation patches that went through Viro, fixing a long-standing
bug that can cause NFSv4 clients to miss updates made by non-nfs users
of the filesystem. Those enable some followup nfsd patches which I
have queued locally, but those can wait till 3.14)"
* 'nfsd-next' of git://linux-nfs.org/~bfields/linux: (24 commits)
nfsd: export proper maximum file size to the client
nfsd4: improve write performance with better sendspace reservations
svcrpc: remove an unnecessary assignment
sunrpc: comment typo fix
Revert "nfsd: remove_stid can be incorporated into nfs4_put_delegation"
nfsd4: fix discarded security labels on setattr
NFSD: Add support for NFS v4.2 operation checking
nfsd4: nfsd_shutdown_net needs state lock
NFSD: Combine decode operations for v4 and v4.1
nfsd: -EINVAL on invalid anonuid/gid instead of silent failure
nfsd: return better errors to exportfs
nfsd: fh_update should error out in unexpected cases
nfsd4: need to destroy revoked delegations in destroy_client
nfsd: no need to unhash_stid before free
nfsd: remove_stid can be incorporated into nfs4_put_delegation
nfsd: nfs4_open_delegation needs to remove_stid rather than unhash_stid
nfsd: nfs4_free_stid
nfsd: fix Kconfig syntax
sunrpc: trim off EC bytes in GSSAPI v2 unwrap
gss_krb5: document that we ignore sequence number
...
Pull btrfs fixes from Chris Mason:
"This pull fixes the empty_zero_page bug that Heiko reported, and
includes one more cleanup from Al Viro"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: get rid of fdentry()
btrfs: fix empty_zero_page misusage
This typedef is unnecessary and should just be removed.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Commit 3e6628c4b3 ("idr: introduce idr_alloc_cyclic()") adds a new
idr_alloc_cyclic() routine and converts several of these users to it.
This is just a missed one - add it.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
the following areas: performance, avoiding waste of entropy, better
tracking of entropy estimates, support for non-x86 platforms that have
a register which can't be used for fine-grained timekeeping, but which
might be good enough for the random driver.
Also add some printk's so that we can see how quickly /dev/urandom can
get initialized, and when programs try to use /dev/urandom before it
is fully initialized (since this could be a security issue). This
shouldn't be an issue on x86 desktop/laptops --- a test on my Lenovo
T430s laptop shows that /dev/urandom is getting fully initialized
approximately two seconds before the root file system is mounted
read/write --- this may be an issue with ARM and MIPS embedded/mobile
systems, though. These printk's will be a useful canary before
potentially adding a future change to start blocking processes which
try to read from /dev/urandom before it is initialized, which is
something FreeBSD does already for security reasons, and which
security folks have been agitating for Linux to also adopt.
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Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull /dev/random changes from Ted Ts'o:
"The /dev/random changes for 3.13 including a number of improvements in
the following areas: performance, avoiding waste of entropy, better
tracking of entropy estimates, support for non-x86 platforms that have
a register which can't be used for fine-grained timekeeping, but which
might be good enough for the random driver.
Also add some printk's so that we can see how quickly /dev/urandom can
get initialized, and when programs try to use /dev/urandom before it
is fully initialized (since this could be a security issue). This
shouldn't be an issue on x86 desktop/laptops --- a test on my Lenovo
T430s laptop shows that /dev/urandom is getting fully initialized
approximately two seconds before the root file system is mounted
read/write --- this may be an issue with ARM and MIPS embedded/mobile
systems, though. These printk's will be a useful canary before
potentially adding a future change to start blocking processes which
try to read from /dev/urandom before it is initialized, which is
something FreeBSD does already for security reasons, and which
security folks have been agitating for Linux to also adopt"
* tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
random: add debugging code to detect early use of get_random_bytes()
random: initialize the last_time field in struct timer_rand_state
random: don't zap entropy count in rand_initialize()
random: printk notifications for urandom pool initialization
random: make add_timer_randomness() fill the nonblocking pool first
random: convert DEBUG_ENT to tracepoints
random: push extra entropy to the output pools
random: drop trickle mode
random: adjust the generator polynomials in the mixing function slightly
random: speed up the fast_mix function by a factor of four
random: cap the rate which the /dev/urandom pool gets reseeded
random: optimize the entropy_store structure
random: optimize spinlock use in add_device_randomness()
random: fix the tracepoint for get_random_bytes(_arch)
random: account for entropy loss due to overwrites
random: allow fractional bits to be tracked
random: statically compute poolbitshift, poolbytes, poolbits
random: mix in architectural randomness earlier in extract_buf()
A few fixes in drivers, the i.MX and wm8962 fixes are for a pretty nasty
issues for users of those drivers if they run into them.
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Merge tag 'asoc-v3.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.13
A few fixes in drivers, the i.MX and wm8962 fixes are for a pretty nasty
issues for users of those drivers if they run into them.
Commit 7d02c4d64d ("iommu/shmobile: Enable the driver on all ARM
platforms") completely brokenly enabled the shmobile-iommu driver under
COMPILE_TEST.
It's bogus, because it won't compile anywhere else than ARM, since it
tries to include <asm/dma-iommu.h>, which is very much ARM-only.
So remove the bogus COMPILE_TEST dependency, which just causes
allmodconfig to fail on non-ARM platforms.
Cc: Joerg Roedel <joro@8bytes.org>
Cc: iommu@lists.linux-foundation.org
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Simon Horman <horms@verge.net.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
setfacl over cifs mounts can remove the default ACL when setting the
(non-default part of) the ACL and vice versa (we were leaving at 0
rather than setting to -1 the count field for the unaffected
half of the ACL. For example notice the setfacl removed
the default ACL in this sequence:
steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir ; setfacl
-m default:user:test:rwx,user:test:rwx /mnt/test-dir
getfacl: Removing leading '/' from absolute path names
user::rwx
group::r-x
other::r-x
default:user::rwx
default:user:test:rwx
default:group::r-x
default😷:rwx
default:other::r-x
steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir
getfacl: Removing leading '/' from absolute path names
user::rwx
user:test:rwx
group::r-x
mask::rwx
other::r-x
CC: Stable <stable@kernel.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Jeremy Allison <jra@samba.org>
Currently pskb_trim_rcsum() just balks on CHECKSUM_COMPLETE packets
and remarks them as CHECKSUM_NONE, forcing a software checksum
validation later.
We have all of the mechanics available to fixup the skb->csum value,
even for complicated fragmented packets, via the helpers
skb_checksum() and csum_sub().
So just use them.
Based upon a suggestion by Herbert Xu.
Signed-off-by: David S. Miller <davem@davemloft.net>
For performance reasons, sch_fq tried hard to not setup timers for every
sent packet, using a quantum based heuristic : A delay is setup only if
the flow exhausted its credit.
Problem is that application limited flows can refill their credit
for every queued packet, and they can evade pacing.
This problem can also be triggered when TCP flows use small MSS values,
as TSO auto sizing builds packets that are smaller than the default fq
quantum (3028 bytes)
This patch adds a 40 ms delay to guard flow credit refill.
Fixes: afe4fd0624 ("pkt_sched: fq: Fair Queue packet scheduler")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
